Display screen with a transitional motion-activated graphical user interface



FIG. 1 is a front view of a first image in a sequence of a display screen with a transitional motion-activated graphical user interface showing a new design;

FIG. 2 is a front view of a second image thereof;

FIG. 3 is a front view of a third image thereof; and,

FIG. 4 is a front view of a fourth image thereof.

In the drawings, the broken line showings of the device, display screen, and various features of the graphical user interface being included for the purpose of illustrating environmental structure and portions of the article and forming no part of the claimed design.

The appearance of the transitional image sequentially transitions between the images shown in FIGS. 1-4. The process or period that one image transitions to another image forms no part of the claimed design. 

CLAIM The ornamental design for a display screen with a transitional motion-activated graphical user interface, as shown and described. 